Cable pulley block having detachable fastening of a cable to a cable drum

a technology of pulley block and pulley drum, which is applied in the direction of transportation and packaging, hoisting equipment, thin material handling, etc., can solve the problems of inability to fasten the press sleeves in the manner described above, high manufacturing and use costs, and achieve the effect of quick detachability and slight expens

Active Publication Date: 2006-09-19
KONECRANES GLOBAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution provides a secure, reliable, and cost-effective cable end fastening that can be used on noncast winding drums, ensuring high tractive force capacity and safety with minimal installation expense, while allowing for easy detachment and replacement of cables.

Problems solved by technology

However, this assumes that the drum tube is made as a cast piece, which is not always the case today.
On such cable drums, a fastening of press sleeves in the manner described above is not possible.
The connection piece and winding drum are intricately manufactured shaped parts adapted to each other, and while it is possible to loosen the fastening of the cable end from the drum with them, their manufacture and use is costly and time-consuming.

Method used

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  • Cable pulley block having detachable fastening of a cable to a cable drum
  • Cable pulley block having detachable fastening of a cable to a cable drum
  • Cable pulley block having detachable fastening of a cable to a cable drum

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Embodiment Construction

[0036]Referring now specifically to the drawings and the illustrated embodiments depicted therein, FIG. 1 shows a cable pulley block with a cable drum 1 or winding drum. Wound on the cable drum 1 is a cable 2, preferably a wire cable, which is subjected to a tractive force S, resulting for example from a load being lifted. The cable drum 1 is pivoted in a housing 3 at both of its opposite ends. At one lengthwise end of the cable drum 1, the end of the cable 2 is secured to the cable drum 1 via a connection piece 4.

[0037]Furthermore, a cable guide ring 5 with a pressure roller 5a is provided, arranged concentrically to the cable drum 1 and wandering along the lengthwise axis of the cable drum 1 together with the point of departure of the cable 2 from the drum 1 as a result of the winding and unwinding of the cable 2, preventing the cable 2 from shifting in the peripheral direction onto the cable drum 1 when the cable 2 is not loaded (slack).

[0038]The overall length L of the cable pul...

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Abstract

The invention concerns a detachable fastening of a cable (2) on a cable drum (1), especially a wire cable, with an opening (1a) arranged in the cable drum (1), with an enlarged cable end (2a) on the cable (2) and a connection piece (4), by which the cable (2) with its end thickening (2a) is detachably secured to the cable drum (1) in the region of the continuous opening (1a). The connection piece (4) may be detachably secured in the continuous opening (1a) and the enlarged cable end (2a) be detachably secured to the connection piece (4).

Description

BACKGROUND OF THE INVENTION[0001]The invention concerns a cable pulley block and, in particular, a technique for detachable fastening of a cable to a cable drum, especially a wire cable.[0002]Cable fastenings to winding drums or cable drums of a hoisting mechanism are machine elements with very high quality demands for safety considerations; their design is regulated in various standards, such as DIN 15020 and EN 14492-2. At the lowest position of a carrying device, there must still be at least two cable turns on the winding drum, and the cable end fastening on the winding drum must be constructed so that, allowing for the friction of the turns remaining on the winding drum, 2.5 times the cable traction force can be sustained, given a coefficient of friction of μ=0.1 between wire cable and base. Guidelines and dimensions for the fastening are set forth, for example, in the Stahl-Eisen-Betriebsblatt (SEB) 666211. The cable ends here are usually incandescently cut or wound with wire.[...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): B66D1/30B66D1/34
CPCB66D1/34
InventorWINTER, KLAUS-JURGENFLAIG, HEINRICHBACKSMANN, JURGENSCHULTE, FRANZ
OwnerKONECRANES GLOBAL